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This issue was reported manually by Chiana. It already has 1 duplicates Build: NetBeans IDE Dev (Build 201010270000) VM: Java HotSpot(TM) Client VM, 17.0-b17, Java(TM) SE Runtime Environment, 1.6.0_21-b07 OS: Windows Vista User Comments: Chiana: Now hear ye... Why is this happening, I now face the problem of not beeing able to continue the project since the connection data has been lost and I dont know how to put it back without adding the driver to the IDE and creating a new persistance unit... Stacktrace: java.lang.NullPointerException at org.netbeans.modules.db.explorer.dlg.AddDriverDialog.showDialog(AddDriverDialog.java:743) at org.netbeans.modules.db.explorer.dlg.AddDriverDialog.showDialog(AddDriverDialog.java:767) at org.netbeans.api.db.explorer.JDBCDriverManager.showAddDriverDialog(JDBCDriverManager.java:193) at org.netbeans.modules.db.util.DatabaseExplorerInternalUIs$DriverDataComboBoxModel.newItemActionPerformed(DatabaseExplorerInternalUIs.java:107) at org.netbeans.modules.db.util.DataComboBoxSupport$ItemActionListener.actionPerformed(DataComboBoxSupport.java:260) at javax.swing.JComboBox.fireActionEvent(JComboBox.java:1240)
Created attachment 102690 [details] stacktrace
As same problem as issue 191420. *** This bug has been marked as a duplicate of bug 191420 ***